Home / 121,803.12-168,077.52-68,081.04

Finding the Fourth Proportional to 121,803.12, 168,077.52 and 68,081.04

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Solution

The fourth proportional to 121,803.12, 168,077.52 and 68,081.04 is: 93,945.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,803.12 : 168,077.52 = 68,081.04 : x
  2. Step 2: Convert to fraction form
    121,803.12/168,077.52 = 68,081.04/x
  3. Step 3: Cross multiply
    121,803.12x = 168,077.52 × 68,081.04
  4. Step 4: Simplify right side
    121,803.12x = 11,442,892,362.22
  5. Step 5: Solve for x
    x = 11,442,892,362.22/121,803.12
  6. Step 6: Final answer
    x = 93,945.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.